Howdy; got one coming; always wanted to try one to side by side with my Mesa Walkabout. I know they'll sound different, but I was curious about side by side power, performance, and 2 ohm stability. The Walkabout has always been just enough, or, not quite enough power. And: dead stable at two ohms, even when pistol whipping it all night. I don't remember hearing any WT550 power, or, reliability gripes, as there were with the WT800 there for a minute a few years back... Feel free to spout off your WT550 experiences whilst I wait.